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7th International Conference on Sewer Processes and Networks , August 2013, Sheffield, U.K. o Problem / Context / Aim. Only few urban catchments are gauged No urban hydrometrics data available for sewer networks design. The used design procedures are very simplistic: rational method and its derivatives, SCS-CN, etc.

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7th International Conference on Sewer Processes and Networks , August 2013, Sheffield, U.K. Problem / Context / Aim. Identifying the most suitable storm water runoff model Assessment of their reliability Strom water runoff/ Discharge model used in Algeria for sewer network design

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7th International Conference on Sewer Processes and Networks , August 2013, Sheffield, U.K. o Conclusion For each method there was only one match between simulated hydrographs and measured hydrographs. It can hardly be said that each method gave a good simulation for a specific event. Also, it becomes obvious that it is hazardous to continue to base the design of drainage networks using models for ungauged catchments without ensuring that the specific conditions of their establishment are the same as those in the urban catchments. o Ongoing research: Developing a model for urban runoff adapted to the context of Algerian cities or more generally to all ungauged urban catchment and find solutions to calibrate these models in lack of hydrometrics measurements.